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Answer: True
The Pacific Ring of Fire is a horseshoe-shaped zone around the Pacific Ocean characterized by frequent earthquakes and volcanic eruptions. It results from tectonic plate boundaries. About 90% of earthquakes and 75% of active volcanoes occur here.
Answer: True
The Chota Nagpur Plateau, spanning Jharkhand, Odisha, and Chhattisgarh, is rich in minerals like coal, iron ore, mica, and bauxite. It is known as the 'Ruhr of India' due to its industrial significance. Major cities include Ranchi and Jamshedpur.
Answer: True
The Bering Strait separates Russia (Siberia) and the USA (Alaska), connecting the Arctic Ocean to the Bering Sea. It is about 85 km wide at its narrowest. The Diomede Islands lie in the strait, with one belonging to each country.
Answer: True
India is the largest producer of ginger globally, contributing about 40% of world production. Major ginger-growing states include Kerala, Karnataka, and Odisha. Ginger is used in food, medicine, and beverages.
Answer: True
India lies entirely in the Northern Hemisphere (8°4'N to 37°6'N) and Eastern Hemisphere (68°7'E to 97°25'E). This geographical position gives India a strategic location in the Indian Ocean region for trade and security.
Answer: True
The Gutenberg discontinuity, at about 2,900 km depth, marks the boundary between Earth's mantle and outer core. It is characterized by a sudden drop in seismic wave velocity. Named after seismologist Beno Gutenberg.
Answer: True
The Malwa Plateau is located in central India, primarily in Madhya Pradesh and parts of Rajasthan. It is bounded by the Aravallis to the northwest and the Vindhyas to the south. The plateau is known for black soil and agriculture.
Answer: True
The Antarctic Circle is located at approximately 66.5° South latitude. It marks the southernmost latitude where the Sun can remain continuously above or below the horizon for 24 hours (midnight sun/polar night).
Answer: True
India is the largest producer and consumer of chickpeas (chana), contributing about 70% of global production. Major producing states are Madhya Pradesh, Maharashtra, and Rajasthan. Chickpeas are a key Rabi pulse crop rich in protein.
Answer: True
The Indo-Gangetic Plain is formed by alluvial deposits brought by the Indus, Ganga, and Brahmaputra river systems. It is one of the world's most fertile regions, supporting intensive agriculture. The plain stretches from Punjab to Assam.
Answer: True
Red soil gets its characteristic red color from iron oxide (ferric oxide) content. It is found in Tamil Nadu, Karnataka, Andhra Pradesh, and Odisha. Red soil is suitable for crops like millets, pulses, and oilseeds but is low in nitrogen and phosphorus.
Answer: True
The mesosphere (50-85 km altitude) is the coldest atmospheric layer, with temperatures dropping to -90°C. Meteors burn up in this layer due to friction. Above it lies the thermosphere, where temperatures rise due to solar radiation absorption.
Answer: True
The Tropic of Capricorn (23.5°S) passes through Australia, dividing it into tropical and temperate zones. It also passes through South America, Africa, and the Indian Ocean. The line marks the southernmost point where the Sun can be directly overhead.
Answer: True
The Bay of Bengal experiences about 4-5 times more cyclones than the Arabian Sea due to warmer sea surface temperatures, higher humidity, and favorable atmospheric conditions. This makes eastern India more vulnerable to cyclonic storms.
Answer: True
The International Date Line (approximately 180° longitude) passes through the Pacific Ocean. It deviates around landmasses to avoid splitting countries. Crossing it eastward subtracts a day; westward adds a day.
Answer: True
The asthenosphere is the upper part of the mantle, below the lithosphere, and is semi-fluid (plastic) due to high temperature and pressure. This allows tectonic plates to move over it. The asthenosphere extends from about 100-410 km depth.
Answer: True
The Aravalli Range is the oldest fold mountain range in India, formed about 1.5 billion years ago during the Proterozoic era. It runs about 692 km from Gujarat to Delhi. Once much higher, erosion has reduced its height. Guru Shikhar (1,722 m) is its highest peak.
Answer: True
The Strait of Malacca connects the Andaman Sea (Indian Ocean) to the South China Sea (Pacific Ocean). It is one of the world's most important shipping lanes, with about 25% of global trade passing through. It lies between Malaysia, Singapore, and Indonesia.
Answer: True
India is the largest producer of mangoes in the world, contributing about 40% of global production. Major mango-growing states are Uttar Pradesh, Andhra Pradesh, Karnataka, and Bihar. India grows over 1,000 varieties, including Alphonso, Dasheri, and Langra.
Answer: True
The Bay of Bengal is located to the east of India, forming part of the northeastern Indian Ocean. It is bordered by India, Bangladesh, Myanmar, and Sri Lanka. Major rivers like Ganga, Brahmaputra, and Mahanadi drain into it.